湖南省2015年11月城市环境空气质量月报
湖南省环境质量月报统计结果表明:按GB 3095-2012和HJ 663-2013评价,本月,我省14个城市环境空气质量达标天数比例范围在93.3%~100%之间,平均达标天数比例为98.8%;平均超标天数比例为1.2%,均为轻度污染。影响城市环境空气质量的主要污染物是细颗粒物。详见表1。
表1 2015年 11月14个城市空气质量状况统计表
城市 |
空气质量类别分布(天数) |
污染天数中首要污染物 分布(天数) |
优良 率% |
达标 天数 |
有效天数 |
PM2.5 达标天数 |
PM2.5 有效天数 |
PM2.5 达标天数比例 % | ||||||||||||||
优 |
良 |
轻度污染 |
中度污染 |
重度污染 |
严重污染 |
SO2 |
NO2 |
PM10 |
CO |
O3 |
PM2.5 |
本月 | ||||||||||
长沙 |
9 |
19 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
93.3 |
28 |
30 |
28 |
30 |
93.3 | ||||
株洲 |
9 |
21 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
100 |
30 |
30 |
30 |
30 |
100.0 | ||||
湘潭 |
10 |
20 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
100 |
30 |
30 |
30 |
30 |
100.0 | ||||
岳阳 |
6 |
24 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
100 |
30 |
30 |
30 |
30 |
100.0 | ||||
常德 |
15 |
15 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
100 |
30 |
30 |
30 |
30 |
100.0 | ||||
张家界 |
14 |
14 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
100 |
28 |
28 |
30 |
30 |
100.0 | ||||
衡阳 |
13 |
16 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
96.7 |
29 |
30 |
29 |
30 |
96.7 | ||||
邵阳 |
11 |
19 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
100. |
30 |
30 |
30 |
30 |
100.0 | ||||
益阳 |
6 |
20 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
96.3 |
26 |
27 |
29 |
30 |
96.7 | ||||
郴州 |
11 |
15 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
100 |
26 |
26 |
29 |
29 |
100.0 | ||||
永州 |
23 |
7 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
100 |
30 |
30 |
30 |
30 |
100.0 | ||||
怀化 |
10 |
17 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
96.4 |
27 |
28 |
29 |
30 |
96.7 | ||||
娄底 |
14 |
14 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
100 |
28 |
28 |
30 |
30 |
100.0 | ||||
吉首 |
18 |
12 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
100 |
30 |
30 |
30 |
30 |
100.0 | ||||
合计 |
169 |
233 |
5 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 |
98.8 |
402 |
407 |
414 |
419 |
98.8 |